Exodus 17:14; Exodus 24:4

14 ADONAI said to Moshe, "Write this in a book to be remembered, and tell it to Y'hoshua: I will completely blot out any memory of 'Amalek from under heaven."

4 Moshe wrote down all the words of ADONAI. He rose early in the morning, built an altar at the base of the mountain and set upright twelve large stones to represent the twelve tribes of Isra'el.